# LiquProp API - Tokenized Property Price History

> LiquProp API - Tokenized Property Price History is a paid API for AI agents from api.relai.fi, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Retrieves historical price data for a tokenized real estate property by token ID and chain ID

## Facts

- Endpoint: POST https://api.relai.fi/relay/1776502063891/v1/market/{tokenId}/{chainId}/price-history
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/liquprop-api-62a7a610
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nsPab0YMVa97kdLQdTSD8

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability liquprop-api-62a7a610 -d '<json body>'
```

Example prompt: Can you pull the full price history for tokenized property token ID 0xabc123 on Polygon (chain ID 137) from LiquProp?

## When to prefer this

Use this endpoint when you need historical price data specifically for a tokenized real estate property on a supported blockchain. Ideal for agents building price charts, analyzing property value trends, or performing due diligence on tokenized real estate assets. Prefer this over generic DeFi price APIs when the asset is a tokenized property managed through LiquProp.

## Known failure modes

- Invalid or non-existent tokenId returns 404 or empty result
- Unsupported chainId returns error or no data
- Payment of 0.01 USDC not provided returns 402 Payment Required
- Network or relay downtime causes timeout
- Token has no price history (newly minted) returns empty array

## How this service works

Get price history for a tokenized property

## Output

Returns a time-series of historical price data for the specified tokenized property, including price points and timestamps for the given token on the specified blockchain network.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/liquprop-api-62a7a610/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.relai.fi](https://www.zero.xyz/host/api.relai.fi/llms.txt)